Typewriting machine



C. L.. WINTER TYlEwRITING MACHINE Match 16,1937.r

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omnes#1,'.` "ivvinitei,A chicago, giu., assignpp te United lhlfogx'aphiqz` Register"Co., a corpora- "fftibn of Illinois' v v j "Apbutien Marca 411, 1935, serai N0.1o,543

s I, v s oliaimauoi."isp-131e) i -"'.I'hisinvention.relates to typewitingmachines Fig. 2 the insideuof the compartment isfurtherl and Tinore particularly to a method and means provided with alock cylinder 20 having an arm for preventing erasures onrecord `strips :whilelV 2l adapted to engage a catch 22 on .the closure they areinfa.tif'pewriter.'` i member.v `As will be readily understood, the lock i 5 .'Ihe primary`object,offtheinvention is to promay ,be roperated by means of `akey (shown 5 "vide af record vcompartrnent which may be dottedin Fig. `3). Asshown in Fig. 3, the inside mounted onlthe platen carriage of i astandard of the compartment isprovided with a xed jourtypewriterlwhich wilt receive one of the veonnal` 23 and aptransversely` shiftable Vsupport 24 tinuous recordstrips advanced by the platen andv whichis slidably mounted inthe-journal 25 andV associated fpresser. .means and will .prevent the is urged inwardly by means of a compressiony 10k stripfrom"beingfretractedfromthe record comspring 26. Preferably the inside face *of the( i partmentinto `re t'v'1 i"x`1g 1`)osit i on.; i i member24is equipped with'airictionvsurface The inventionisillustrated;ina preferred exn-` 21 which serves as `a `clutch `for the re-win'd bodiment in the"` accompanying drawings, in`, V spool C'. i f wnich+f`` .f i .The spool Cf, comprises a core28 secured on 15 Fig. 1 is a side elevational view of a typewriter the outwardly extending shaftf29 which is jour-` I embodying the invention, `the stationery being nalled at one`en`d in the bearing 23 and is jourshown brokenly and the chain guard removed; nailed at the opposite end in the member 24. Fig. 2is a broken sectional `view through the The spool is equipped at one end with an end 1 2d record compartment `and platen roll, with the ange 30 and at the other end with a ratchet `stationery shOWndiagrammatiCaIIy, taken as inwheel 3| provided with a friction face 32 to dicated at line 2 of Fig. 3; Fig. 3 is a broken secengage the factfl. As shown in Fig. 4 the cover tional `view taken as indicated at line `3 of Fig. 1; I5 is provided with a leaf-spring paw1`33 which I i Fig. 4 is a` sectional view taken as indicated at is disposed so as to engage the ratchet wheel 43| 25 linelof Fig. 3; Fig. 5 is an enlarged broken secand permit rotation `of the wheel in but one 25 `tional View of the cover fastening device taken as direction when the cover is closed. i

`indicated at line 5 of Fig. 4; Fig. 6 is a broken As shown in Fig. 3 the transversely shiftable i sectional view of the spring associated with the member 24 is equipped on its outer end with a i I f `fastening device shown in Figs. 4 andv5;and Fig. small sprocket wheel 34 which forms part of 7, a broken eIeVatiOnalview showing how the i the transmission device D. The sprocket wheels 30 chain guard is supported in position. i II` and 34 are positively connected by means of In the preferred embodiment, illustrated in the a suitable sprocket chain 35 which is sufriciently accompanying drawings, A designates a typeloose to permit the sprocket wheel 34 to move i writer frame; B, aplaten roll carriage shiftably laterally when the spool C' is being removed or 35 mounted thereon;` C; a record compartment replaced in the record compartment. In order 35 mountedon said carriageand equipped with a to keep the chain 35 reasonably taut an idler re-wlnd spool C; and D, `a transmission device member 36, equipped `at its lower end with a for driving the roll C' fromthe `platenroll. roller 31, is journalled on the member 24 and isl The typewriter frameA may be of any standyieldingly urged into contact with said chain by `4,0 ard construction equipped with a transversely. means of. a torsion spring 38. i 40 shiftable carriage B in which is mounted the As shown in Figs. 3 and "1, the sprocket wheels Y usual platen roll` Ill equipped at one end with a and chain are enclosed by a guard 39 which is sprocket wheel II. fixed in the journal 25 bymeans of a bracket 40 The record compartment V'C may comprise a and screws 4I. f hollow metal box, preferably of sheet metal, sup- In order to load the device, ,stationery strips 42 45 `ported on rearwardly extending `brackets I2 which may be interleaved with carbon strips 43 which may beisecured to the. rack bar I3 of the are led around the platen from the rear and adcarriage. Preferably` the record compartment vanced into typing position. 'I'he cover I5 of has a iixed section and a front closure memf the record compartment may be raised and the ber I5 pivotally connected thereto at I 6. The record strip attached to the re-wind core 28. 'I'he 50 cover may be equipped with a suitable snap cover may then be locked shut and the strip fastener stud I1. adapted `to project through a typed in the usual` manner. vThe re-windspool y ,ange I8 of the xed portion of the compartment C having a smaller sprocket 34 than the sprocket ll'and a spring I3 may be provided to yieldingly f II on the platen roll will rotate somewhat faster Q hold thelcover in closed position. As shown in than the platen roll. "I'hus the record strip 42 55 which advances into the -record compartment will be kept taut but there will be no danger of breakage as slippage may occur between the member 24 and the wheel 3i The operator will be unable 6 to retract the record strip from the record compartment by reversing the platen roll due to the action of the pawl 33.

The invention has particular utility in banks and the like, where no erasures can be permitted l and it is essential that any attempt at alteration will be plainly apparent on the record strip.

AThe foregoing detailed description has ybeen given for clearness oi understanding only, and no unnecessary limitations should be understood ,l therefrom, but the appended claims should be construed as broadly as permissible, in View o f the prior art.

I claim: l

1. A typewriting machine comprising: a frame;

20 a carriage shiftably mounted on said frame and equipped with a record compartment; feedmeans in said carriage comprising a rotatable platen roll and presser-means adapted to advance into typing position record strips interleaved with 25 a transfer strip; a wind-up spool journalled in said compartment to receive a record strip advanced beyond the platen; means for driving said take-up roll in timed relation to the rotation of the platen roll; and means on said wind-up spool 3.0 for restraining the record strip from retraction into typing position.

2. A device as specified in claim 1, in which the driving means includes a friction clutch within said compartment, said clutch beingdriven by 35 the platen roll.

3. A device as specified in claim-1, in which the record compartment is provided with a closure member adapted to be locked in closed position, and the restraining means includes a pawl mounted on said closure member so as to engage the wind-up spool when the closure member is locked in closed position.

4. In a machine of the character set forth: a frame provided with a rotatable platen roll having at one end a sprocket wheel; a take-up spool rotatably mounted over the platen between a fixed bearing and a transversely shiftable journal provided in said frame, said shiftable journal being provided with a fixed sprocket wheel normally aligned with the first mentioned sprocket wheel, and said shiftable Journal having friction-means for engaging said spool; a sprocket chain formingadriving connection between said sprocket wheels; and a tension-member yieldingly urged against said chain to keep the same taut.

5. The method of preventing erasures 0n a typewriting machine which comprises: feeding continuous strips of stationery through thev typing position of the machine uniformly; and winding one of said strips on a spool and positively restraining backward rotation of said spool.

6. The method of preventing changing of records in a typewriting machine which comprises: feeding uniformly a.A plurality of strips of continuous stationery through the typing position of the machine by means of the feed mechanism; winding the'advance lend of one strip on a take-up spool in advance of the typingposition; driving a take-up spool in timed relation to the operation of the feed mechanism so as to keep the strip taut;l and positively restraining the spool from rotation in but one direction.

CHARLES L. WINTER.

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